Glass container forming machine

ABSTRACT

A deadplate assembly for an I.S. machine which is moveable from a remote location to a first location and then to a final location. The motion path is linear.

The present invention relates to I.S. (individual section) glass formingmachines which form a parison at a blank station and then at a blowstation, first blow the parison and then cool the blown parison to forma bottle and more particularly to the structure for blowing the parisonand cooling the blown parison into a bottle and then cooling the bottleto a temperature below the annealing point so that the bottle can thenbe quickly cooled to room temperature.

BACKGROUND OF THE INVENTION

The blowing operation is effected by a blow head. Conventionally theblow head is brought into position on top of (engaging) a blow mold atthe blow station and provides air (“final blow”) under pressure througha downwardly extending blow tube to the interior of the parison to blowthe parison into contact with the interior of the blow mold. The parisoncould also be formed with vacuum or with a vacuum assist. The blownparison must then be formed into a bottle, i.e., cooled to the pointwhere it is rigid enough to be gripped and removed from the blow stationby a takeout mechanism. The outer surface of the blown parison is cooledby cooling the blow molds and the inner surface of the blown parison iscooled by the final blow air which continues to flow into the blownparison. U.S. Pat. No. 4,726,833 discloses a state of the art blow head.Conventionally the cooling air escapes from the interior of the bottlethrough a permanently open exhaust. The size of the exhaust will bedefined as a balance between inlet and outlet.

Before a conventional takeout can be displaced from a remote location toa pick up location proximate the top of the formed bottle, the blowhead, including the blow tube, must be displaced away from the blowmold. This displacement must be at least to a position where it will notinterfere with an inwardly moving takeout. To speed up these steps, U.S.Pat. No. 5,807,419, proposes a combined blow head and takeout mechanism.This mechanism permits the operation of takeout jaws as soon as the blowhead, which engages the top of the blow molds during final blow, isslightly elevated, with the blow tube remaining fully extended andoperating, following the formation of the bottle. The takeout jawsimmediately reseal the blow head. The internal cooling of the bottlewill accordingly continue as if the blow head was in place on top of theblow mold while the bottle is removed from the blow mold and carried toa dead plate on which it will be deposited. The cooling of the outersurface of the formed bottle stops with the opening of the blow molds.

U.S. Pat. No. 4,508,557, discloses a dead plate arrangement for blowingcooling air around the bottle to provide additional outer surfacecooling on the deadplate. U.S. Pat. No. 4,892,183 discloses a dualtakeout mechanism which functions to alternately remove bottles from theblow station placing half on one output conveyor and the other half on asecond output conveyor.

In all of these systems, the bottles once removed from the deadplate,will be conveyed into a Lehr which utilizes a series of burners toimmediately reheat the bottles to a uniform higher temperature and thenallows the bottles to cool slowly before being discharged from the Lehr.

Formed bottles have also been tempered in separate machinery byreheating the bottles and then simultaneously cooling the inner andouter glass surfaces (see for example, U.S. Pat. No. 2,309,290).

OBJECT OF THE INVENTION

It is an object of this invention to provide an I.S. machine which moreeffectively removes heat from the blown parison/formed bottle.

Other objects and advantages of the present invention will becomeapparent from the following portion of this specification and from theaccompanying drawings which illustrate in accordance with the mandate ofthe patent statutes a presently preferred embodiment incorporating theprinciples of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a perspective view of a blow head mechanism made inaccordance with the teachings of the present invention;

FIG. 2 shows a diagrammatic cross sectional view of the blow head of theblow head mechanism shown in FIG. 1;

FIG. 3 shows a time versus pressure curve for the operating blow head;

FIG. 4 shows a logic diagram for the operation of the blow headmechanism shown in FIG. 1;

FIG. 5 is an enlarged elevational view in section of the blow head atthe exhaust position;

FIG. 6 shows an elevational view in cross section of the blow headmechanism made in accordance with the teachings of the presentinvention;

FIG. 7 shows a view of the cooling tube shown in FIG. 6 taken at 7—7thereof;

FIG. 8 is an elevational sectional view of the bottom of the coolingtube;

FIG. 9 is a view taken at 9—9 of FIG. 8,

FIG. 10 is a first displacement profile illustrating the verticaldisplacement of the cooling tube during the blowing and cooling of theparison to form a bottle;

FIG. 11 is a second displacement profile illustrating the verticaldisplacement of the cooling tube during the blowing of the parison andthe cooling of the parison to form a bottle; and

FIG. 12 is a logic diagram illustrating the application of thedisplacement profile illustrated in FIGS. 10 and 11.

FIG. 13 shows a perspective view of a takeout mechanism made inaccordance with the teachings of the present invention;

FIG. 14 shows an elevational view in section of the takeout mechanismshown in FIG. 13;

FIG. 15 is a view taken at 15—15 of FIG. 14;

FIGS. 16-21 illustrate one of the pair of synchronized takeout/deadplatemechanisms of the present invention moving through a single cycle;

FIG. 22 is a view taken at 22—22 of FIG. 21; and

FIGS. 23-28 illustrate the synchronism of a pair of takeout assemblieswith their associated deadplate mechanisms;

FIG. 29 is an oblique view of a the deadplate mechanism shown in FIGS.16-21;

FIG. 30 is an oblique view of the mechanism for opening and closing thecan doors;

FIG. 31 is a logic diagram illustrating the operation of the temperaturesensor; and

FIG. 32 is a temperature vs. position curve for the formed bottle.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 shows a blow head mechanism 10 of the blow station of an I.S.machine. A triple gob machine is illustrated, and three blow molds 12arranged side by side are shown. A blow head arm 16 supports three blowheads 18. The blow head arm 16 is mounted on a vertical post 20 coupledto an electronic (servo) motor 22 which causes the blow head arm to moveup and down. The post also rotates via a scroll cam (not shown) definedin a housing 24. Such up and down and rotary movement of the post 20causes the blow heads 18 to be displaced between a retracted “off”position and an advanced “on” position, as shown in FIG. 1, at which theblow heads 18 engage the top of the blow molds 12. The operation of theservomotor is controlled by a control C (26). Air under pressure issupplied from a suitable source 27 to a pressure regulator P (29) whichwill set the desired pressure for final blow as defined by the controlC/26.

A blow head 18 is shown diagrammatically, in section, in FIG. 2. Theblow head 18 has an air inlet 34 leading to a blow tube 36 which extendsdownwardly into the parison 38. The blow head surrounds the finish 40 ofthe parison. Final blow air blows the parison and then cools theinterior surface of the blown parison. Air exhausts upwardly between theblow tube 36 and the parison into a chamber 41 and out through anadjustable exhaust 42. A pressure sensor 44 is arranged to monitor theair pressure in the chamber 41 (closely related to the pressure of theair within the parison).

FIG. 3 shows changes that have been discovered in the pressure P in thechamber 41 vs. time T plot. At about T1 seconds (0.05 seconds, forexample) after the time T0 when blowing pressure is applied through theair inlet 34, the pressure in the chamber begins to rise. The pressureincreases to an initial high P1 and drops to P2 (it is believed thatthis occurs as the parison rapidly expands). At T2 (0.15 seconds, forexample) the parison is blown against the blow mold and the pressureonce again increases until it reaches a steady skate pressure P3 whichcontinues until the blow head is removed more than one second followingthe application of final blow. The pressure sensor 44 supplies data tothe control C (26). While the curve has been discussed relative theblowing of the parison with pressure, it would be the same with vacuumassist or with the blowing of the parison with negative pressure (i.e.,vacuum).

The control first functions to Displace The Blow Head To The “On”Position And Set Blow Head Air Pressure To “Final Blow” Pressure 50.“Final blow” pressure can be selectively set and is a pressure that willresult in the parison being properly blown. Conventionally, “final blow”air is supplied from 20-30 PSI. Higher pressure will result in adefective bottle. Pressure is applied for a time T2 which is the timerequired to blow the parison (until the query “Has Time T2 Passed” 52 isanswered in the affirmative). The operator may empirically define andInput T2 54. Alternatively the control can “Determine T2” 56 bydetermining the location of the negative peak (a local minimum) at P2(This negative peak may be slightly delayed from the instant when thebottle is fully blown and a correction could then be applied). Inpractice T2 could be periodically determined with the control receivingupdated T2 input. The operator may also reduce T2 if he finds that theblowing of the parison will not be effected. With the parison blown, thecontrol will “Raise The Blow Head “X” And Set Blow Head Air Pressure To“Internal Cooling” Pressure” 58 (X and “internal Cooling” Pressure canbe selectively set). This second “on” position is the escape position.The cooling flow is no longer limited by the size of the blow headexhaust. The volume of cooling flow for the remaining second or morebefore the blow head is turned “off” will be very substantiallyincreased. “Internal cooling” air, can be supplied at a pressure whichis substantially higher than final blow air. For example internalcooling air can be supplied at 45 PSI since this is a commonly availableair supply. Internal cooling air will be supplied at a pressuresufficient to maintain at least a minimum desired pressure within thebottle. This cooling flow could continue until time T3 (until the query“Has Time T3 Passed?” 60) is answered in the affirmative whereupon thecontrol will “Displace The Blow Head To The “Off” Position” 62.

When the blow head is lifted the vertical distance “X” to the escapeposition (FIG. 5), exhaust air will be directed by the selectivelyconcavely contoured annular recess surface 63 of the interior opening ofthe lower portion of the blow head to direct cooling air at the outervertical surface of the finish.

Each blow head (FIG. 6) has a central axial hole 70 configured tomatingly receive the blow tube 34. The blow tube is displaceablevertically but is restrained from rotating by a pair of guide keys 72which engage opposed flats 74 (FIG. 7) on the outer diameter of the blowtube. The top end portion 76 of the blow tube is cylindrical andthreaded having an outer diameter larger then the spacing betweenopposed flats and the keys accordingly function as a down stop for theblow tube. A blow tube support and drive assembly 78 is mounted on thetop surface 79 of the blow head arm with a number of screws 80. Theassembly has an air manifold 82 including a link 84 communicating with afinal blow air duct 85 in the arm, an overhead distribution manifold 86and three air distribution legs 88 which depend vertically from theoverhead distribution manifold.

Located within each distribution leg is the top portion 90 of a drivemember 92 having a threaded internal diameter 94 extending downwardlythrough the top portion, through a driven gear portion 96 and thenthrough a lower portion 98 which extends downwardly through the blowhead mounting assembly 100. The O.D. of the drive member 92 is rotatablysupported by three bearings 102. The internal thread of the drive memberI.D. threadedly receives the threaded top end portion 76 of the blowtube and vertical displacement of the blow tube will accordingly resultwhenever the driven gear portion 96 is rotated. Rotation will becontrolled by an electronic motor 104 coupled to a drive gear 106. Thedrive gear engages adjacent driven gear portions of the left two drivengear portions to drive the left two drive members 92 and an idler gear108 between the right hand pair of driven gear portions 96 drives theright hand drive member.

The bottom of the blow tube 34 (FIG. 8) has an annular relief 110defined in the I.D. The annular upper collar 111 (which is supported byan “X” frame 112) of an air deflector assembly 114, is press fit intothe annular relief. Integral with and suspended from the frame 112 is adeflector 116 having an annular concave surface 118 that will divert aportion of the downwardly directed air stream radially outwardly towardsthe outer wall of the blown parison with the remainder flowingdownwardly. FIG. 6 shows the blown parison which when cooled becomes abottle 10 and shows the blow mold 12 which includes a bottom plate 11and a pair of mold halves 12 a, 12 b.

FIG. 10 illustrates an illustrative displacement profile for the blowtube which will blow and cool the parison. The blow head is displaced tothe “on” position with the blow tube at the “up” position (T1). The blowtube is then rapidly accelerated to a maximum velocity (V1) and held atthat velocity until T2. The blow tube is then decelerated to a lowervelocity V2 at T3 and held at that velocity until T4 when it isdecelerated to a stop at its “down” position (T5). The blow tube willthen remain at the “down” position until T6. The blow tube will thenfollow the same profile returning the blow tube to a stop at the “up”position. The blow head can then be removed and the molds opened. Thedisplacement profile will be selected to achieve the desired cooling ofthe inner surface of the blown parison, i.e., the motion profile isconfigured to co-ordinate with the cooling requirements of thecontainer. This co-ordination can be a co-ordination based on the heattimes the mass of the bottle. As shown in FIG. 6, the bottle has a longneck which has less glass to cool then the body of the bottle. And ifthe bottle was formed in a blow and blow process, the body of the bottlewill be hotter relative to the long neck. As a result the velocity ofthe blow tube as it proceeds along the neck portion is co-ordinated withthe heat pattern of the bottle (the amount of heat energy desired to beremoved along the bottle) and is much faster traversing the long neckthan is the velocity traversing the body. Accordingly more cooling willbe directed to the body where it is needed. Where the bottom of theformed parison is thicker, even more cooling will be required and thedwell (T6-T5) at the bottom will result in a lot of cooling air beingdirected at the bottom. Cooling air will continue to rise up along thebody and neck to achieve additional cooling when the blow tube is at thebottom (this will also happen at any vertical position). FIG. 11illustrates a variant displacement profile where the blow tube makesthree cycles while the parison is blown and cooled. This co-ordinationcould also be a function of the shape of the bottle. For example thebottle might have a bulge which would not be effectively cooled bycooling air flowing upwardly from a nozzle located below the bulge. Inthis situation like the above cooling of a thicker base the displacementof the cooling nozzle might be either stopped at this bulge to allowmore cooling air to be directed into the bulge or slowed down as itdisplaced upwardly across the bulge to the same effect. The formingprocess will also be relevant to this co-ordination. Thickness of theglass as a function of height may vary. In a blow and blow process theupper portion of a container will tend to be colder than the bottomportion and vice versa for a bottle formed in a press and blow process.

FIG. 12 illustrates a logic diagram for controlling the displacementwith different cycles during the time when a parison is blown andcooled. Here the operator inputs the number “N” of cycles desired. Thecontrol will Define Time Blow Head “Off”-Time Blow Head “On” 120,proceeds to Divide By “N” To Define Cycle Time 122 and then proceeds toScale Blow Tube Displacement Profile For Cycle Time 124.

While the blown parison/formed bottle is in the blow mold externalcooling will be effected by blowing cooling air through a series ofcircumferentially located cooling holes 19 defined in the blow moldswhich are supplied by an air plenum 21 to which the mold bottom plate 11is secured.

A takeout mechanism is schematically illustrated in FIG. 13. Threebottles 10 which were formed in blow molds at the blow station are shownstanding on the bottom plate 11 of an associated blow mold pair 12 a, 12b shown in the open position. The illustrated machine is a triple gobmachine and accordingly three bottles 10 were formed. Once the molds areopened, a takeout assembly 140 of a takeout mechanism 150 grips thebottles. The takeout mechanism also includes a three axis support 160for the takeout assembly that is suspended from a beam 170 thattraverses the machine, i.e., spans the 6, 8, 10, 12, 16, etc.,individual sections of the machine. The three axis support, whichincludes an X axis drive 180, a Y axis drive 190 and Z axis drive 200,can take a great variety of forms including the form shown in U.S. Pat.No. 4,892,183, which is incorporated by reference herein.

The takeout assembly has, at each bottle location, a blow tube 34 (FIG.14). The blow tube support and drive assembly is the same as for theblow head mechanism except that the drive members 92 end at the drivengear portion and the guide keys 132 extend downwardly from the top wall133 of the gripper housing 134 proximate the blow tube holes 135.

The takeout assembly also has a manifold housing 141 including anoverhead distribution manifold 142 and three air distribution legs 143which depend vertically from the overhead distribution manifold. Finalblow (this includes air for final blow and/or internal cooling)depending on how the parison is being formed) air F.B./144 is suppliedto the distribution manifold via a selectively controlled valve 145.

The base 164 of the manifold housing 141 is bolted onto the top wall 33of the gripper housing 134 with a number of screws 165 with the drivengear portions 96, the drive gear 106 and the idler 108 located in achamber located between the base of the manifold housing and the topwall of the gripper housing. The manifold housing has a pair of guidetubes 166 extending vertically upwardly from the top of the manifoldhousing which receive vertical guide rods 168 which are part of the Zaxis drive 20.

As can be seen from FIG. 14, the gripper housing may start as a solidblock. A through slot 171 having opposed horizontal keyways 172 isdefined at each bottle location extending from the front of the gripperhousing to the rear thereof. These slots receive front and back gripperbrackets 174 (FIG. 15) each of which has integral vertical front 175 andhorizontal bottom 176 panels extending completely across the gripperhousing and vertical transverse (front to back) panels 178 which includehorizontal keys 179 which are received by the keyways 172. The verticalfront panels 175 are open 177 between the vertical transverse panels toallow easy flow of the air from the interior of the bottle toatmosphere. Secured within each of a pair of through holes 173 whichextend through the gripper housing from the front to the back of thehousing is a double acting cylinder 181 including opposed piston and rodassemblies 182. A pair of screws 183 connect each gripper bar to thepiston rods 184 on the side of the gripper bar and compression springs186, located between the piston and the cylinder housing will normallymaintain the gripper bars at the closed position. A locating plate 187is secured to the front panel of the gripper bracket with a rodreceiving hole 188 to locate the axis of the rod Air under pressure issupplied via a valve 191 from a source of gripper air G.A./192 to thecenter of each cylinder to open the gripper bars. The gripper bars mayhave selectively sized semicircular inserts (not shown) so that theclosed gripper bars will grip the formed bottles on the finish of thebottles.

FIGS. 16-22 schematically illustrate how three bottles that have justbeen formed in the blow station of a triple gob I.S. machine standingready for pick-up (with the blow molds withdrawn) are sequentiallyprocessed by a takeout assembly. The takeout assembly will removebottles from the blow station and deposit them on a conveyor 15 and thebottles will then be conveyed into a cooling tunnel 17 (the tunnel willisolate the hot air from an operator who may have to enter the spacebetween the conveyors to service either the conveyor or the machine).The takeout assembly 140 is shown in FIG. 16 at the first deadplateposition. Bottles have been formed in the blow molds 12. The molds openand the takeout assembly moves longitudinally to the pickup locationshown in FIG. 17 where the formed bottles will be gripped. The grippedbottles will be removed from the pickup position and carried back to thefirst deadplate position (FIG. 18). In the event that the bottles are tobe rejected, the gripper jaws can be opened at the first deadplateposition to drop the rejected bottles into a cullet removal chute 13.The gripped bottles, supported at the blow station, are supported nextto doorways or openings in associated cooling cans 220 which aresupported on a deadplate mechanism 240 which is at its park position.The deadplate mechanism now moves horizontally, transversely towards thegripped bottles to the first deadplate position (until the grippedbottles are supported centrally within their associated cooling can) andthe doors of the cooling cans are then closed (this is shown with thecircle of the cooling can being a closed circle) FIG. 19. The takeoutassembly and the deadplate mechanism then conjointly horizontallytransversely move to a conveyor location adjacent a first, right sideconveyor 15 (FIG. 20), the cooling can doors open and the takeoutassembly then moves transversely away from the deadplate mechanism (FIG.21) and then vertically downwardly from the up position to the down,deposit position (FIG. 22) to place the gripped bottles on the conveyorwhereupon they will be released. The takeout is then returned to the upposition and the deadplate mechanism and the takeout assembly will thenbe conjointly transversely displaced back to their initial positionsshown in FIG. 16. Again the takeout can be displaced with sequential orsimultaneous x and y movements. When molds are to be changed, bothdeadplate mechanisms can be displaced to the conveyor location to openup space for the operator.

With the bottles (Bottles No. 1) removed from the blow station (FIG.18), an invert mechanism (not shown) will deliver formed parisons to theblow station and the blow molds will close. The parison will be blownand cooled to form a bottle (FIG. 19) and the molds will open so thatthe sequentially formed bottles (Bottles No. 2) can be removed (FIG. 20)by a second takeout assembly. This forming process will be repeated withthe next formed bottles (Bottles No. 3) being removed by the firsttakeout assembly. The synchronous movements of the first takeoutassembly and its associated deadplate mechanism and the second takeoutassembly and its associated deadplate mechanism are illustrated in FIGS.23-28.

During the time when the first takeout assembly is at the firstdeadplate position (FIG. 23), is displaced to the pickup position (FIG.24) to grip a bottle, returns with the gripped bottles to the firstdeadplate position (FIG. 25), and waits for the first deadplatemechanism to move to the first deadplate position to capture the bottlesand close the cooling can doors (FIG. 26), the second takeout assemblyand second deadplate mechanism are located at the conveyor locationadjacent a second, left side conveyor with bottles formed in theprevious cycle located within the cans with the can doors closed. Beforethe first takeout assembly and first deadplate mechanism are displacedconjointly to the conveyor location adjacent the first conveyor (FIG.27), the doors to the cans of the second deadplate mechanism open andthe second takeout assembly is transversely displaced to displace thegripped bottles to a deposit location over the second conveyor whereuponthe second takeout assembly is lowered from the up deposit location to adown deposit location to locate the gripped bottles proximate the secondconveyor. The gripped bottles are released and the second takeoutassembly is raised to the up deposit location. As the first takeoutassembly and first deadplate mechanism are displaced from the firstdeadplate position to the conveyor position proximate the firstconveyor, the second takeout assembly and second deadplate mechanism areconjointly displaced to their start locations (FIG. 28) to start theircycle again removing the next bottles (Bottles No. 2) formed in the blowstation.

The basic cycle now repeats with the roles reversed for the firsttakeout assembly/deadplate mechanisms and the second takeoutassembly/deadplate mechanism with the first takeout assembly/deadplateassembly returning to their start locations to receive the next formedbottles (Bottles No. 3). While the displacement of the takeout arm fromthe conveyor location to the pick up location is shown with sequential Xand Y movements it should be understood that such movements could occursimultaneously.

FIGS. 29 and 30 illustrate a deadplate mechanism which has a plenumchamber 194 which is supplied cooling air C.A./195 controlled by aselectively actuated valve V/196. Cooling air is available throughoutthe entire period during which a bottle is located within a can and forlonger periods to cool the can either before or after a bottle islocated within the can. Cooling air enters the cans 220 through holes198 in the top surface 199 of the plenum chamber blowing up against thebottom of a bottle supported above the top surface by a takeout assemblyand up the space between the suspended bottle and the inside wall 101 ofthe can, leaving the can through the can opening 103 at the top of thecan. The plenum chamber is supported for Y-axis displacement by suitablerods 105 and is displaced by a Y-axis drive 107. FIG. 21 schematicallyillustrates the door displacement mechanism for the deadplate mechanismcans. The doors 109 are coaxially mounted on a gear (a worm gear forexample) 206 which is supported for rotation about its axis. Operativelyconnected with each gear is a worm (for example) 208 which is displacedby a drive 209 having a motor 210 connected to the worm via a rotary tolinear converter 212 (alternates such as rack and pinions may be used).

The interior surface of a can is configured so that cooling air admittedinto the can through the bottom inlet holes 198 in the top surface ofthe plenum chamber will follow the surface of the bottle during itspassage to the exit hole 103. Air flow to a can will occur as desired toachieve the cooling of the bottle but in the preferred embodiment airflow is continuous from the time a bottle enters a can to the time abottle leaves the can.

A temperature sensor 125 secured to one or more of the cans providestemperature data which should be stable over time (data would becompared at the same point in the cycle). The control C/26 whichreceives this data determines whether “Sensed Temperature At CanT°+/−X°” 126 (T and X can be manually or automatically inputted) andwhere the answer is answered in the negative, the control will “RejectThe Bottles” 127. Where the cullet chute is located in the center, thedeadplate mechanism can be displaced back to its ready position, thedoors of the can can be opened, the takeout can be displaced to aposition over the cullet chute and the bottles can be released.

The blow tube will be oscillated between the up and down positions witha displacement profile matched to the cooling requirements of the bottlefrom the moment the takeout assembly is lowered to its bottle grippingposition until the gripped bottle is deposited onto the conveyor. Aswith the blowhead a convenient algorithm for defining this oscillationis shown in FIG. 12 and numerous cycles will occur while the bottle isgripped by a takeout assembly.

Referring to FIG. 32 which tracks the thermal energy of the object alongthe glass forming process, it can be seen that the thermal energycontinuously decreases from the time the parison is blown in the blowmold to the time the bottle is discharged from the cooling tunnel.Thermal energy is first removed by the internal cooling of the blownparison within the blow mold and the conjoint cooling of the blownparison by the blow molds. Cooling then continues from the time a bottleis gripped by a takeout assembly to the time it is deposited on aconveyor and then cooling occurs as the bottle proceeds along theconveyor.

As can be seen from FIG. 31, the thermal energy of the bottle has beenreduced to the point where the bottle is fully tempered before it isdeposited on the conveyor and accordingly further cooling canaccordingly take place at a rapid rate without causing defects in thecontainer. Referring to FIG. 16, conveyor cooling which may be within atunnel or not. Cooling would continue for a distance that would be muchshorter than the length of a conventional Lehr, perhaps as short asabout 25 feet. If it is within a tunnel, the tunnel may be divided upinto a number of cooling zones each of which has a fan 300 whichsupplies shop air to an inlet 302 within the tunnel directing the airupstream. Upstream of the inlet is an exhaust 304 which discharges thecooling air from the tunnel. If there is no tunnel the fans will simplyblow cooling air at the bottles. When the bottles are sufficientlycooled they will be discharged from the conveyor for further processingwhich could include inspection and packing or filling.

1. A deadplate assembly for an I.S. machine which forms a parison into abottle at a blow station and transfers the formed bottle from theforming station to a deadplate location, comprising deadplate meanscomprising a canister having a base at the bottom into which a formedbottle can be located, said base including air inlet means through whichcooling air can blow into the canister, and a cooling chamber forsupplying cooling air to said base, means for supporting said deadplatemeans for displacement along a predetermined path, and displacementmeans for displacing said deadplate means from the deadplate location toa second location.
 2. A deadplate assembly for an I.S. machine accordingto claim 1, wherein said displacement means additionally comprises meansfor displacing said deadplate means from a remote third location to thedeadplate location.
 3. A deadplate assembly for an I.S. machineaccording to claim 2, wherein said displacement means additionallycomprises means for displacing said deadplate means from the secondlocation to the remote location.
 4. A deadplate assembly for an I.S.machine according to claim 1, wherein the displacement path is linear.